Dual slot with one (1) open PCI Express x16 slot.Once launched, it will guide you through the installation process. If the file does not automatically launch, double-click the driver package icon. If your web browser is set to ‘Open “safe” files after downloading’ (the default setting for Apple’s Safari browser) the installer package will automatically launch as soon as it finishes downloading. You will need to accept this license prior to downloading any files. Check terms and conditions checkbox to allow driver download. STEP 1: Review the NVIDIA Software License. To download and install the drivers, follow the steps below: